package org.yang.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import lombok.extern.slf4j.Slf4j;

import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;
import org.yang.reggie.common.R;
import org.yang.reggie.entity.Employee;
import org.yang.reggie.service.EmployeeService;

import javax.servlet.http.HttpServletRequest;

/**
 * @author 缘友一世
 * date 2023/5/9-10:34
 */
@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {
    @Autowired
    private EmployeeService employeeService;

    /**
     * 员工登录
     * @param request
     * @param employee
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee) {
        /*
        1、将页面提交的密码password进行md5加密处理
        2、根据页面提交的用户名username查询数据库
        3、如果没有查询到则返回登录失败结果
        4、密码比对，如果不一致则返回登录失败结果
        5、查看员工状态，如果为已禁用状态，则返回员工已禁用结果
        6、登录成功，将员工id存入Session并返回登录成功结果*╱
         */

        //1、将页面提交的密码password进行md5加密处理
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        //2、根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername,employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);

        //3、如果没有查询到则返回登录失败结果
        if(emp==null) {
            return R.error("此用户未注册");
        }

        //4、密码比对，如果不一致则返回登录失败结果
        if(!emp.getPassword().equals(password)) {
            return R.error("密码错误");
        }

        //5、查看员工状态，如果为已禁用状态，则返回员工已禁用结果
        if(emp.getStatus()==0) {
            return R.error("此账号已被禁用");
        }

        //6、登录成功，将员工id存入Session并返回登录成功结果
        request.getSession().setAttribute("employee",emp.getId());
        return R.success(emp);
    }

    /**
     * 员工退出 清除session
     * @param request
     * @return
     */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request) {
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }

    /**
     * 新增员工
     * @param employee
     * @return
     */
    @PostMapping
    public R<String> save(HttpServletRequest request,@RequestBody Employee employee) {
        log.info("新增员工信息:{}",employee.toString());

        //设置初始化密码666666，进行MD5加密处理
        employee.setPassword(DigestUtils.md5DigestAsHex("666666".getBytes()));
        //设置员工信息的创建和更新时间信息
        //employee.setCreateTime(LocalDateTime.now());
        //employee.setUpdateTime(LocalDateTime.now());
        //获取当前登录用户的ID
        Long empId = (Long) request.getSession().getAttribute("employee");
        //设置员工账号的创建者、更新者信息
        //employee.setCreateUser(empId);
        //employee.setUpdateUser(empId);

        //save使用IService提供的save方法
        employeeService.save(employee);

        return R.success("新增员工成功");
    }

    /**
     * 员工信息分页查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    //使用mybatis中定义的page
    @GetMapping("/page")
    public R<Page> page(int page,int pageSize,String name) {
        log.info("page={},pageSize={},name={}",page,pageSize,name);
        //构造分页构造器
        Page pageInfo = new Page(page, pageSize);
        //构造条件构造器
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        //添加过滤条件
        queryWrapper.like(StringUtils.isNotEmpty(name),Employee::getName,name);
        //添加排序条件
        queryWrapper.orderByDesc(Employee::getUpdateTime);
        //执行查询 无需接收返回值，直接封装到了pageInfo中
        employeeService.page(pageInfo,queryWrapper);
        return R.success(pageInfo);
    }

    /**
     * 修改员工信息
     * @param request
     * @param employee
     * @return
     */
    @PutMapping("")
    public R<String> update(HttpServletRequest request,@RequestBody Employee employee) {
        log.info("employee:{}",employee);
        //获取当前登录用户的id
        //Long empId = (Long) request.getSession().getAttribute("employee");
        //更新用户Id和更新时间
        //employee.setUpdateUser(empId);
        //employee.setUpdateTime(LocalDateTime.now());

        long id = Thread.currentThread().getId();
        log.info("线程id为：{}",id);

        employeeService.updateById(employee);
        return R.success("员工信息修改成功");
    }

    /**
     * 根据Id返回用户信息
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id) {
        log.info("根据id查询员工信息<===>");
        Employee employee = employeeService.getById(id);
        if(employee!=null) {
            return R.success(employee);
        }
        return R.error("无此用户信息");
    }
}
